Electric heater



May 14, 1929. L. SHUMAN 1,712,522

ELECTRIC HEATER Filed Feb. 16, 1927 2 Sheets-Sheet l lNVENTOR May 14, 1929. L SHUMAN 1,712,522

ELECTRIC HEATER Filed Feb.

1927 2 Sheets-Sheet 2 INVENJO .f/@; 3

ATTORN EY Patented May 14, 1929.

' turn the water into steam Within the boiler,

1,712,522 PATENT OFF ICE.

LEO SHUMAN, OF SPOKANE, WASHINGTON. k

ELECTRIC HEATER.

Application filed February 16, 1927. Serial No. 168,634.

This' invention pertains to heating apparatus, and particularly to the use of electricity for the raising of the temperature of rooms and buildings.

The object of the invention is to so combine electric heating units with a boiler and to so connect the boiler with radiators that a measure of water maybe filled into the boiler and distributed to the heating units in small quantities,- so that the heating-units will rapidly from whence the same is distributed throughout the radiators and after condensation has taken place within the radiators, the same is returned to the boiler for re-heating.

It is recognized that in order to bring electric heating to a general commercial use, that the greatest possible efiiciency must be obtained from the amount of electricity used, and it is with this idea in view that the details of'the heater are constructed and arran ed.

e invention vwill be hereinafter particularly described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawing, Fig. 1 is a side elevation cf the heater. Fig. 2 is a central vertical sec= tional view of the same. Fig. 3 1s a transverse sectional view taken on the line 3-3 of Fig. 2.

In a detail description, in which like numerals refer to like parts throughout the several views, the boiler 10 has side walls 11 connected with the base 12, a cavity 13 is formed on the base 12 by means of an annular plate 14. By means of the annular plate 15 and the sides 16welded to the plate 14 a container for the element 17 is formed. An upper ele ment container is formed by means of the annular plate 18 and sides 19 being welded tothe annular plate 20 in which is the element 21. Fastened to the plate 20 is an annular drip pan 22. The plates 18 and 20 and the sides 19 being open to the front are welded in the opening 23 in the side of the boiler 11 as shown in Fig. 1 and. Fig. 3. The plates 14.- and 15 and the sides 16 being open to the front are welded in the opening 24 as shown in Fig.

1 and Fig. 3. The elements are put in posi-' tion in .the container throu h the openings 23 and24 from the outside. Through the centre of plate 14 and 15 is an opening 25 above which is a percolator base 26 and a tube 27 assing up and throu h plates 18- and 20. ounted on the top 0 the tube 2'? is a cap 28 having a connection portion 29. opening 30 through the portion 29 connects with a cavity 31 in the cap 28. Openings 30 are provided in the bottom portion of the cap 28. A transparent gage 33 has connections by reaching to the interior of the boiler 10, and indicates the liquid level therein. The water level is controlled by patented devices. Through plates 14 and 15 are tubes 34 which permit steam bubbles to pass through to the Water level. Fastened to plate 15 are heavy copper tubes 35 for conducting heat into the water. The boiler is provided with a water inlet 36 and a steam outlet 37 and popofi valve connection 38 and a drain opening 39.

In a practical operation of the heater, the tubes 35 and the plates 14 and 15 produce steam from the main body of water, while the steam bubbles from under plate 14 pass through the opening 25 into the base of the percolator, and with the steam bubbles formed in the percolator base 26 it forces the water in the tube 2'? up and through the open-' ing 30 into the cavit 31, thence passing downward through t e openings 32 and spraying onto the heated plate 18, where the transformation into steam takes place.

What is claimed is 1. An electric heater comprising a boiler, an enclosed electric element mounted in the boiler near the bottom thereof, means of per colating heated water up and on top of an electric heater mounted above the water level,

electric connections with the heating element,

means for bringing the heated water that i acted upon by said heater, a steam outlet and a water inlet to the boiler. Y

2. An electric heater comprising a boiler, an electric element mounted 1n the boiler near the bottom thereof, an enclosure to said heating element, means for securing a water circulation around said enclosed heating element, an enclosed electric element mounted above the water level, means of percolating the water from under and above the lower enclosed heating element up and spraying the water on top of the enclosed heating element mounted above the water level, a water holding receptacle below said latter heating element and adapted to receive drip water and hold it in proximity to the lower face of said heating element, electric connections with the heating element, a steam outlet and a water inlet to the boiler.

3. An electric heater comprislng a boiler,

an electric element mounted in the boiler near the bottom thereof, an enclosure to said heatin element, means for the water and steam ubbles assing through said enclosure, means for con noting the heat into the water, means for a water circulation around said enclosed heating element, an enclosed electric element mounted above the water level, means of percolating the water up from under and above the lower enclosed heating element and sprayin the Water on top of the enclosed heating e ement mounted above the water level, means of holding a small portion of water against the bottom of the said heating element mounted above the water level, electric connections with the heating element, a steam outlet and a water inlet to the boiler.

4. An electric heater comprising a receptacle, two heating elements in said receptacle,

one below the water level and the other above the water level and means for causing water heated by the lower heating element to be brought into effective heating relationship with both the top and bottom of the upper heating element.

5. An electric heater comprising a receptacle, two heating elements in said receptacle, one below the water level and the other above the water level, means for moving the water heated by the lower heating element into effective heating relation With the top of the upper heating element, and means for catch ing the portion of the water which runs off of the top of said upper heating element and holding it in effective heating relation with the bottom of the upper heating element.

LEO SHUMAN. 

